Unwinder for spools



Dec. 38, 'i923 R. K. CLARK ET AL UNWINDER FOR SPOOLS Filed July 5. 1922i unwinder which Patented mec. 1S, 1923.

unTTrLo sTaTas intatta PATENT oTTTcT.

ROBERT K. CLARK, 0F SPRINGFIELD, AND EMXL W. KBOEPEL, OF EIOLYOKE,MASSA- CHUSETTS, SSIGNORS T0 THE AMERICAN THREAD COMPANY, 01E JERSEYCITY, NEW JERSEY, A CORPORTION OF NEW JERSEY.

'UNWINDEB FOR SPOOLS.

Application tiled July 3,

To all 'wl/0m t may concern.'

Be it known that we, ROBERT K. CLARK and EMIL W. KRoErEL, citizens ofthe United States, residing at Springfield and Holyoke,

respectively, county of Hampden, State of p Massachusetts, have inventeda certain new and useful improvement 1n Unwinders for Spools, of whichthe following is a full, p

clear, and exact description.

Uur invention relates to unwinders for spools and has for its object toprovide a new and durable unwinder which will adapt itself to varioussizes of holes in spools; also an unwinder in which the drag or tensioncan be easily and positively adjusted; also an unwinder in which thelocation of the eye with respect to the top head of the spool will bepositively determined; also an shall be inexpensive to manufacture.

The following is a description of an embodiment of our inventionreference being had to the accompanying drawings, in which,

Fig. 1 shows a vertical section through the unwinder on the line 1-1,Fig. 2 and a portion of a spool in the upper end of which the unwinderis inserted;

Fig. 2 is a plan view with the head of the adjusting screw removed;

Fig. 3 is a section on the line 3-3, Fig. 1; and

Fig. 4 is a section on the line 1 -4, Fig. 1.

Referring more particularly to the drawings, 1 is a spool having upperand lowerv r the plug is fully inserted engages the top surface of thehead of the spool so as to definitely fix the location of the plug. 15is a screw which fits within a hole passing downward through the top ofthe plug and constitutes a longitudinally movable adjusting device. Thisscrew passes through two loops 17 and 19 in a flier 21, the two loo sbeing connected by a springportion 23. T e flier is made of spring wireand is provided 1922. Serial No. 572,673.

with a helical thread guide 25. 27 is a thread leading from the spoolthrough the gulde 25 to a guide 29 located above the spool. When theupper end of the thread is ulled the thread unwinds from the spool, theflier 21 revolving and feeding the thread ofi" so as to clear the head3. The screw 15 uts a tension upon the flier 21 by reason of thefrictional contact of the loop 17 with the head of the screw and theloop 19 with the top of the plug. This tension can be increased byscrewing the screw further in and reduced by unscrewing the screw asdesired.

The device is simple in construction and inexpensive to manufacture andon account of its positive action and definite location in the spoolgives uniform good results, while its longitudinal adjustable screwenables its tension to be adapted for the retension of said flier beingadjustable by the longitudinal movement of saidy member relatively tosaid plug.

2. In an unwinder for spools the combination of a plug having an axialhole and adapted to enter the hole in a spool end, a headed memberlocated within the hole in said plug and longitudinally adjustabletherein, a flier carried by said member, said flier having two portionsspaced apart from one another and embracing said member, and aconnecting U-shaped spring portion located out of alinement with theaxis of said member; so that the tension of said flier is adjustable bythe longitudinal movement of said member relatively to said plug.

3. Tn an unwinder for spools the combination of a plug having an axialhole and adapted to enter the hole in a spool end, a headed memberlocated within the hole in said plug and longitudinally adjustabletherein, a) flier carried by said member, the

Q amasar,

tension of said ier being adjustable by the longitudinal movement ofsaid member relatively to said plug, said plug having a shoulderadjacent to its upper end adapted to engage the upper lsurface of aspool 'head and having a radially slotted lower portion enlargedadjacent to its lower end, said lower end having a bore of largerdiameter than the shank of said headed member and surrounding the lowerend of said shank.

4. ln an unwinder for spools the combination of a plug adapted to enterthe hole in a spool end, a headed screw-threaded member in said plug, aflier carried by said member said flier having two portions spaced apartfrom one another and embracing said member, said two portions beingconnected by a spring portion of said Hier, so that the tension of saidflier is adjustable by the turning of said screw-threaded member and.20

resulting longitudinal movement of said member relatively to said pluRBERT CLARK. EMIL W. KROEPEL.

